title: Extra-nodal non-Hodgkin's lymphomas: a morphological study of 23 patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008223:Lymphoma / Q000145:classification / Q000473:pathology*; D008297:Male; D008875:Middle Aged